Chalk book flagship store. Chalk "5000 questions of decisive battle" is divided into common sense, judgment and reasoning, data analysis, quantitative relationship and speech understanding and expression. Each module is divided into two volumes, and each module has more than 1000 questions.

Chalk net's business includes civil service examination, postgraduate entrance examination, teacher qualification certificate, institution and other skills training. It uses technical means to realize the intelligent marking function, and provides a free question bank for users to consult and learn, gives lectures online through live webcasting, and provides physical books, papers and customer service at the same time.